01
Bring the raw material
Describe the video idea, enter a working title, paste a script excerpt, and optionally attach user-owned reference images in the workspace.
Included in the workspace
How it works
One creative thread from raw idea to test-ready package.
Thumbuild keeps the video promise, visual direction, edits, title pairings, and testing rationale connected across every iteration.
Start creating02
Clarify the click promise
Turn the source into a compact brief: audience, payoff, curiosity gap, emotional tone, must-show elements, and constraints.
Included in the workspace
03
Explore distinct model passes
Generate 2 meaningfully different routes: one GPT Image 2.5 Sunburst pass and one Nano Banana Pro pass.
Included in the workspace
04
Build and edit real layers
Refine text, subjects, backgrounds, shapes, and effects directly or with a recognised plain-language edit.
Included in the workspace
05
Score the package
Review mobile readability, hierarchy, subject prominence, relevance, originality, and policy safety with visible reasoning.
Included in the workspace
06
Export a test plan
Pair 2 model-specific thumbnail hypotheses with complementary titles and package the files, notes, and rationale for publishing.
Included in the workspace